EP 4282093 A1 20231129 - DIRECT DETECTION OF MODULATED COHERENT OPTICAL SIGNALS BY MEANS OF A STRUCTURE EXHIBITING FANO RESONANCE
Title (en)
DIRECT DETECTION OF MODULATED COHERENT OPTICAL SIGNALS BY MEANS OF A STRUCTURE EXHIBITING FANO RESONANCE
Title (de)
DIREKTE DETEKTION MODULIERTER KOHÄRENTER OPTISCHER SIGNALE MITHILFE EINER STRUKTUR MIT FANO-RESONANZ
Title (fr)
DÉTECTION DIRECTE DE SIGNAUX OPTIQUES COHÉRENTS MODULÉS AU MOYEN D'UNE STRUCTURE PRÉSENTANT UNE RÉSONANCE DE FANO
Publication
Application
Priority
- EP 21152503 A 20210120
- EP 2022051158 W 20220119
Abstract (en)
[origin: WO2022157210A1] A waveguide-coupled cavity structure configured to exhibit Fano resonance (such as asymmetric Fano resonance or symmetric Fano resonance (inverse Lorentzian resonance), is utilized in an optical receiver or a method for direct detection of coherent optical signals by converting a phase-modulation on a coherent optical signal into an intensity-modulation of the optical signal. The waveguide-coupled cavity structure is designed for a transmission spectrum of the Fano resonance to overlap with a spectrum of the modulated coherent optical signal to suppress transmission of at least one sideband of the modulated coherent optical signal through the structure, the sideband suppression being asymmetrical with respect to the carrier frequency of the modulated coherent optical signal. The invention may be used for direct detection of more advanced coherent modulation formats such as quadrature phase-shift keying (QPSK) signals and high order quadrature amplitude modulation (n-QAM) signals.
IPC 8 full level
H04B 10/61 (2013.01)
CPC (source: EP US)
H04B 10/615 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022157210 A1 20220728; CN 116711234 A 20230905; EP 4282093 A1 20231129; US 2024056196 A1 20240215
DOCDB simple family (application)
EP 2022051158 W 20220119; CN 202280009549 A 20220119; EP 22702890 A 20220119; US 202218258168 A 20220119